#ifndef PERMUTATION_H_
#define PERMUTATION_H_
#include <string>
using namespace std;
void m_next_permutation(std::string s) {
	int j, k;
	for (int i = s.size() - 2; i >= 0; i--){
		if (s[i] < s[i + 1]) {
			j = i;
		}
	}

}
#endif